Composition measurements of a comet from the Rosetta orbiter spacecraft. Space Sci. Rev. 138, 259-274. doi:10.1007/s11214- 008-9335-2.S. Gulkis, C. Alexander, Composition measurements of a comet from the Rosetta orbiter spacecraft. Space Sci. Rev. (2008), this issue. : 10.1007/...
1.Which part of a comet is described in the passage as a "dirty ice ball" ? A.The nucleus B.The coma C.The dust tail D.The ion tail 阅读原文中文译文 Astronomers now have a fairly good idea of what a comet really is. When it is far from the Sun, it is a very small object ...
Since a comet loses matter on each pass by the Sun, eventually it will be depleted to the point where it is no longer visible.Comets that approach the Sun have finite lifetimes.Given the typical sizes of comets and the typical rates at which they lose matter, astronomers have concluded that...
Disentangling the effects of the various epochs on the final composition of a comet is complicated. But comets are not the only source of information about the solar nebula. Protostellar disks around young stars similar to the protosun provide a way of investigating the evolution of disks ...
chemical-composition-of-the-comet网络彗星化学组成网络释义 1. 彗星化学组成 chemical-英汉词典... ... chemical composition of soil 土壤化学成分 chemical composition of the comet 彗星化学组成 ... www.fastdict.net|基于2个网页© 2024 Microsoft 隐私声明和 Cookie 法律声明 广告 帮助 反馈...
Comet-like compositions of simple and complex volatiles are found in protostars, and can readily be explained by a combination of gas-phase chemistry (to form, for example, HCN) and an active ice-phase chemistry on grain surfaces that advances complexity3. Simple volatiles, including water and...
We present the analysis of ≈100 molecular maps of the coma of comet 67P/Churyumov-Gerasimenko that were obtained with the MIRO submillimeter radiotelescope on board the Rosetta spacecraft. From the spectral line mapping of H<sub>2</sub><sup>16</sup>O, H
Composition-dependent outgassing of comet 67P/Churyumov-Gerasimenko from ROSINA/DFMS Implications for nucleus heterogeneity? M, Fuselier SA et al (2015) Composition-dependent outgassing of comet 67P/Churyumov-Gerasimenko from ROSINA/DFMS implications for nucleus heterogeneity? A... - 《Astronomy & ...
The lipids of 6 sections from the Deep Sea Drilling Project's transect (Legs 56 and 57) of the Japan Trench have been examined. Five of these form a downhole sequence at a site on the landward side of the trench, the other is on the dist... SC Brassell,PA Comet,G Eglinton,......
The gas activity of Comet C/1999 S4 (LINEAR) was monitored at radio wavelengths during its disruption. A runaway fragmentation of the nucleus may have begun around 18 July 2000 and proceeded until 23 July. The mass in small icy debris (les30-cm radius) was comparable to the mass in the...